38x52x10 mm Rotary Shaft Oil Seal NBR, Skeleton Type TC Shaft Seal

Product Overview

The 38 x 52 x 10 mm size sits on a narrow 14 mm radial band between shaft and bore, so the seal is tall relative to its diameter. That taller body gives the lip more support, which suits positions where the shaft carries a side load or the housing is a machined casting.

At a glance:

38x52x10 mm | NBR (nitrile butadiene rubber) | double lip skeleton TC body with garter spring and ribbed outer diameter | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

Seals of this shape are common on small gearboxes, oil pumps, camshaft ends and industrial drives. The metal skeleton carries the rubber, and the ribbed outer diameter is what holds the part in the bore under vibration.

Key Features & Benefits

• Ten millimetre body: A 10 mm section spreads the press fit over a longer bore surface, which gives more grip and supports the lip better under side load.
• Metal skeleton: The skeleton keeps the whole body rigid, so the seal does not deform when it is pressed into a machined housing.
• Double lip protection: The main lip holds the oil and the second lip blocks dust on the exposed side, which protects the running surface underneath.
• Spring keeps contact: The garter spring holds lip load steady through the service interval, so sealing force does not fall away as the shaft wears.
• Narrow radial band: With 7 mm of radial difference between shaft and bore, the case has to be concentric: the steel skeleton holds that tolerance in production.
• Identified by size alone: A 38 mm shaft, 52 mm bore and 10 mm width is all that is needed to confirm the size from stock.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	38 mm
Outer Diameter (OD)	52 mm
Width / Height	10 mm
Material	NBR (nitrile butadiene rubber)
Colour	Black
Structure	Double lip, garter spring, metal skeleton, ribbed outer diameter
Seal Type	Rotary shaft oil seal
Marking	TC 38 52 10
Continuous Service Temperature	-30 C to +100 C (short peaks to +120 C)
Brand	VKEFOT
Origin	Xingtai, Hebei, China

Given as nominal 38 mm inner diameter by 52 mm outer diameter by 10 mm width. On this size the radial space between shaft and bore is small, so check both dimensions before replacing a worn seal.

Material & Construction

The sealing lip is NBR (nitrile butadiene rubber), a grade selected for mineral oil, gear oil and grease service across -30 C to +100 C (short peaks to +120 C). A steel skeleton gives the tall 10 mm body its rigidity, and a garter spring keeps the lip working against the shaft as the surface polishes. If the assembly runs hotter, or the lubricant is synthetic, the same 38 x 52 x 10 body can be produced in FKM for continuous duty up to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: skeleton bonding, lip geometry, spring load and rib profile on the outer diameter checked at set intervals.
• Final: dimensional check on 38 mm inner diameter, 52 mm outer diameter and 10 mm width, hardness, lip edge, rib form and marking, then packing count verification.
• Traceability: inspection results for each batch are recorded and kept; the inspection scope can be agreed before order confirmation.

Production data for the run is retained and can be matched to the delivered carton, so a measurement query can be answered with the actual figures. A third-party inspection before loading can be arranged if it is requested when ordering.

Customization and OEM Service

packaging and logo available upon request

Packaging, Carton and Delivery

Standard packing is individual polybag, inner carton, then export carton. Carton marks, labels and barcodes are printed to buyer specification.

Lead time for standard sizes is typically 7 to 15 working days after order confirmation, and longer for sizes that are not held as standard stock. Minimum order quantity depends on whether the size is a stocked standard or made to order. Pricing, MOQ, freight and trade terms are confirmed in the written quotation. Send an RFQ with quantity and destination port.

How to Order

The more of this you include, the faster and more accurate the quotation:

1. Size: 38 x 52 x 10 mm, or the shaft, bore and width measured on the machine.
2. Quantity and destination: required quantity, destination country and discharge port.
3. Material: NBR general purpose, FKM for high temperature, HNBR for other fluids.
4. Marking and packaging: marking text, carton label data and barcode format.
5. Drawing or sample: useful where a repair size is being considered for a worn bore.
6. Working conditions: fluid, temperature, shaft speed and any side load.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the shaft at 38 mm and the housing bore at 52 mm, confirm 10 mm of depth is available, then check which way the lip faced on the seal you removed. The small radial band means both diameters must be measured rather than assumed.

What are the exact dimensions of this oil seal?
38 mm inner diameter, 52 mm outer diameter and 10 mm overall width. Housing bore wear has a larger effect on a narrow band like this, so measuring the bore is worthwhile.

What is the minimum order quantity?
MOQ depends on whether 38x52x10 is a stock line or a made to order size. Give your planned quantity and the applicable MOQ comes back with the quotation.

What is the lead time, and can you ship by sea or air?
Standard sizes normally ship within 7 to 15 working days of order confirmation. Air and sea options are both arranged, with freight quoted for your destination.

Can you supply FKM or HNBR instead of NBR?
Yes. The 38 x 52 x 10 size can be produced in FKM or HNBR where the operating temperature or fluid goes beyond NBR. Confirm the duty when enquiring.

Do you provide samples, and are they free?
Samples can be arranged for evaluation. Sample and freight costs are quoted per request, and on a confirmed bulk order the sample charge is normally credited to the order.

Can you produce our packaging and logo?
packaging and logo available upon request.

What information do you need to quote?
Size 38 x 52 x 10 mm, quantity, destination port, material, working temperature, fluid and packaging requirements. A drawing helps where the bore is worn.

Request a Quotation

Send the size 38 x 52 x 10 mm or the shaft, bore and width from your assembly, with quantity, destination and branding requirement, and the reply will carry MOQ, lead time, packing details and price.

VKEFOT Seals: oil seals, O-rings and custom rubber parts. Xingtai, Hebei, China.